Dennis, T.
and Hale, P.
(2011),
High-Accuracy Photoreceiver Frequency Response Measurements at 1.55 um by Use of a Heterodyne Phase-Locked Loop, Optics Express
(Accessed October 27, 2025)
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High-Accuracy Photoreceiver Frequency Response Measurements at 1.55 um by Use of a Heterodyne Phase-Locked Loop
Published
Author(s)
,
Abstract
We demonstrate a high-accuracy heterodyne measurement system for characterizing the magnitude of the frequency response of high-speed 1.55 µm photoreceivers from 2 MHz to greater than 50 GHz. At measurement frequencies below 2 GHz, we employ a phase-locked loop with a double-heterodyne detection scheme, which enables precise tuning of the heterodyne beat frequency with an RF synthesizer. At frequencies above 2 GHz the system is operated in free-run mode with thermal laser tuning of the beat frequency. We estimate the measurement uncertainties for the low frequency range and compare the measured high-frequency response of a photoreceiver to a measurement using electro-optic sampling.Citation
Optics Express
Volume
19
Issue
21
Pub Type
Journals
Keywords
Calibration, Frequency Response, Heterodyne, Metrology, Optical Communications, Phase Locked Loop, Photoreceiver
Citation
Issues
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Created September 29, 2011, Updated February 19, 2017